src/gallium/drivers/r300/r300_query.c

   1 /*
   2  * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "util/u_memory.h"
  24 #include "util/u_simple_list.h"
  25
  26 #include "r300_context.h"
  27 #include "r300_screen.h"
  28 #include "r300_emit.h"
  29
  30 #include <stdio.h>
  31
  32 static struct pipe_query *r300_create_query(struct pipe_context *pipe,
  33                                             unsigned query_type,
  34                                             unsigned index)
  35 {
  36     struct r300_context *r300 = r300_context(pipe);
  37     struct r300_screen *r300screen = r300->screen;
  38     struct r300_query *q;
  39
  40     if (query_type != PIPE_QUERY_OCCLUSION_COUNTER &&
  41         query_type != PIPE_QUERY_OCCLUSION_PREDICATE &&
  42         query_type != PIPE_QUERY_GPU_FINISHED) {
  43         return NULL;
  44     }
  45
  46     q = CALLOC_STRUCT(r300_query);
  47     if (!q)
  48         return NULL;
  49
  50     q->type = query_type;
  51
  52     if (query_type == PIPE_QUERY_GPU_FINISHED) {
  53         return (struct pipe_query*)q;
  54     }
  55
  56     if (r300screen->caps.family == CHIP_RV530)
  57         q->num_pipes = r300screen->info.r300_num_z_pipes;
  58     else
  59         q->num_pipes = r300screen->info.r300_num_gb_pipes;
  60
  61     q->buf = r300->rws->buffer_create(r300->rws, 4096, 4096, TRUE,
  62                                       RADEON_DOMAIN_GTT);
  63     if (!q->buf) {
  64         FREE(q);
  65         return NULL;
  66     }
  67     q->cs_buf = r300->rws->buffer_get_cs_handle(q->buf);
  68
  69     return (struct pipe_query*)q;
  70 }
  71
  72 static void r300_destroy_query(struct pipe_context* pipe,
  73                                struct pipe_query* query)
  74 {
  75     struct r300_query* q = r300_query(query);
  76
  77     pb_reference(&q->buf, NULL);
  78     FREE(query);
  79 }
  80
  81 void r300_resume_query(struct r300_context *r300,
  82                        struct r300_query *query)
  83 {
  84     r300->query_current = query;
  85     r300_mark_atom_dirty(r300, &r300->query_start);
  86 }
  87
  88 static void r300_begin_query(struct pipe_context* pipe,
  89                              struct pipe_query* query)
  90 {
  91     struct r300_context* r300 = r300_context(pipe);
  92     struct r300_query* q = r300_query(query);
  93
  94     if (q->type == PIPE_QUERY_GPU_FINISHED)
  95         return;
  96
  97     if (r300->query_current != NULL) {
  98         fprintf(stderr, "r300: begin_query: "
  99                 "Some other query has already been started.\n");
 100         assert(0);
 101         return;
 102     }
 103
 104     q->num_results = 0;
 105     r300_resume_query(r300, q);
 106 }
 107
 108 void r300_stop_query(struct r300_context *r300)
 109 {
 110     r300_emit_query_end(r300);
 111     r300->query_current = NULL;
 112 }
 113
 114 static void r300_end_query(struct pipe_context* pipe,
 115                            struct pipe_query* query)
 116 {
 117     struct r300_context* r300 = r300_context(pipe);
 118     struct r300_query *q = r300_query(query);
 119
 120     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 121         pb_reference(&q->buf, NULL);
 122         r300_flush(pipe, RADEON_FLUSH_ASYNC,
 123                    (struct pipe_fence_handle**)&q->buf);
 124         return;
 125     }
 126
 127     if (q != r300->query_current) {
 128         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 129         assert(0);
 130         return;
 131     }
 132
 133     r300_stop_query(r300);
 134 }
 135
 136 static boolean r300_get_query_result(struct pipe_context* pipe,
 137                                      struct pipe_query* query,
 138                                      boolean wait,
 139                                      union pipe_query_result *vresult)
 140 {
 141     struct r300_context* r300 = r300_context(pipe);
 142     struct r300_query *q = r300_query(query);
 143     unsigned i;
 144     uint32_t temp, *map;
 145
 146     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 147         if (wait) {
 148             r300->rws->buffer_wait(q->buf, RADEON_USAGE_READWRITE);
 149             vresult->b = TRUE;
 150         } else {
 151             vresult->b = !r300->rws->buffer_is_busy(q->buf, RADEON_USAGE_READWRITE);
 152         }
 153         return vresult->b;
 154     }
 155
 156     map = r300->rws->buffer_map(q->cs_buf, r300->cs,
 157                                 PIPE_TRANSFER_READ |
 158                                 (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
 159     if (!map)
 160         return FALSE;
 161
 162     /* Sum up the results. */
 163     temp = 0;
 164     for (i = 0; i < q->num_results; i++) {
 165         /* Convert little endian values written by GPU to CPU byte order */
 166         temp += util_le32_to_cpu(*map);
 167         map++;
 168     }
 169
 170     r300->rws->buffer_unmap(q->cs_buf);
 171
 172     if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
 173         vresult->b = temp != 0;
 174     } else {
 175         vresult->u64 = temp;
 176     }
 177     return TRUE;
 178 }
 179
 180 static void r300_render_condition(struct pipe_context *pipe,
 181                                   struct pipe_query *query,
 182                                   boolean condition,
 183                                   uint mode)
 184 {
 185     struct r300_context *r300 = r300_context(pipe);
 186     union pipe_query_result result;
 187     boolean wait;
 188
 189     r300->skip_rendering = FALSE;
 190
 191     if (query) {
 192         wait = mode == PIPE_RENDER_COND_WAIT ||
 193                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 194
 195         if (r300_get_query_result(pipe, query, wait, &result)) {
 196             if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
 197                 r300->skip_rendering = condition == result.b;
 198             } else {
 199                 r300->skip_rendering = condition == !!result.u64;
 200             }
 201         }
 202     }
 203 }
 204
 205 void r300_init_query_functions(struct r300_context* r300)
 206 {
 207     r300->context.create_query = r300_create_query;
 208     r300->context.destroy_query = r300_destroy_query;
 209     r300->context.begin_query = r300_begin_query;
 210     r300->context.end_query = r300_end_query;
 211     r300->context.get_query_result = r300_get_query_result;
 212     r300->context.render_condition = r300_render_condition;
 213 }